const fs = require("fs")
const read = fs.createReadStream("xunan4/凉州词.txt",{highWaterMark:25});
read.setEncoding("utf8")
read.on('data', function (chunk) {
    console.log(chunk.toString());
    read.pause();
    setTimeout(function () {
        read.resume();
    }, 1000);
});
read.on("close", function () {
    console.log("读取完毕");
})